GB729456A - Improvements in lead pencils - Google Patents
Improvements in lead pencilsInfo
- Publication number
- GB729456A GB729456A GB1100452A GB1100452A GB729456A GB 729456 A GB729456 A GB 729456A GB 1100452 A GB1100452 A GB 1100452A GB 1100452 A GB1100452 A GB 1100452A GB 729456 A GB729456 A GB 729456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- pencil
- pin
- sleeve
- propelling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/02—Writing-core feeding mechanisms
- B43K21/06—Writing-core feeding mechanisms with the writing-cores fed by means sliding in longitudinally-slotted casings
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
729,456. Pencil holders. KNIGHT, H. T. Feb. 20, 1954. No. 11004/52. Class 146(3). A propelling pencil comprises a pencil body 1 and a lead-propelling and lead-clamping device 5 detachable from and adjustable along the body 1. The body 1 is slotted radially to permit a pin 5d .to engage a lead 2, the pin 5d being fixed to a split sleeve 5a which tends to spring open. The sleeve 5a has a tapered thread 5b engaging a nut 5c, such that screwing of the nut tightens the sleeve 5a to effect lead clamping after the pin 5d has been adjusted to the required position along the body 1. When the lead 2 is exhausted, the device 5 is transferred to a replacement casing containing a new lead. A projection 5f on the device 5 prevents rolling of the pencil.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US277020A US2750924A (en) | 1952-03-17 | 1952-03-17 | Lead pencils |
GB1100452A GB729456A (en) | 1954-02-20 | 1954-02-20 | Improvements in lead pencils |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1100452A GB729456A (en) | 1954-02-20 | 1954-02-20 | Improvements in lead pencils |
Publications (1)
Publication Number | Publication Date |
---|---|
GB729456A true GB729456A (en) | 1955-05-04 |
Family
ID=9978276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1100452A Expired GB729456A (en) | 1952-03-17 | 1954-02-20 | Improvements in lead pencils |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB729456A (en) |
-
1954
- 1954-02-20 GB GB1100452A patent/GB729456A/en not_active Expired
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